<html>
    <head>
        <title>{% block title %}{% endblock %}</title>
    </head>
    <body>
        <div style="  display: flex; flex-direction: column; align-items: center;">    
            <h1>Каталог</h1>
            <h2>{% block subtitle %}{% endblock %}</h2>
            <div style="  display: flex; flex-direction: column; align-items: center;">
                {% block content %}{% endblock %}
            </div>
        </div>
    </body>
</html>